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Ma R, Zhang J, Gong J, Lin Y, Zhang J, Huang ZQ, Chang CR, Liu S, Zhu W, Wang Y, Zeng K, Tao Y, Hu J, Zhang Z, Liang X, Han Y, Mao J, Zhuang Z, Yan J, Wang D, Xiong Y. The Cooperative Effects of the Rh-M Dual-Metal Atomic Pairs in Formic Acid Oxidation. Angew Chem Int Ed Engl 2025; 64:e202503095. [PMID: 40095392 DOI: 10.1002/anie.202503095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2025] [Revised: 03/14/2025] [Accepted: 03/14/2025] [Indexed: 03/19/2025]
Abstract
The continuously increasing mass activity of precious metal in formic acid oxidation reaction (FAOR) is the key to achieving the practical application of direct formic acid fuel cells (DFAFCs). Herein, Rh-based dual-metal atomic pairs supported on nitrogen-doped carbon catalysts [DAP-(M, Rh)/CN] with adjacent interatomic Rh-M (M = V, Cr, Mn, Fe, Co, Ni, Cu) have been synthesized by a "host-guest" strategy. It is discovered that DAP-(Cr, Rh)/CN shows the highest mass activity of 64.1 A mg-1, which is 3.8 times higher than that of the single atom Rh catalyst (17.0 A mg-1) and two orders of magnitude higher than Pd/C (0.58 A mg-1). Interestingly, the mass activity of DAP-(M, Rh)/CN first increases from 11.7 A mg-1 (Rh-V) to 64.1 A mg-1 (Rh-Cr) and then decreases to 21.8 A mg-1 (Rh-Cu), forming a volcano curve of the reaction activity. Density functional theory calculations combined with in situ Fourier transform infrared spectrometer (FTIR) spectra reveal that formic acid oxidized on a series of DAP-(M, Rh)/CN catalysts through the formate route with the subsidiary M metal atoms binding the HCOO species and the Rh atom accepting the H atoms. The most suitable adsorption strength of HCOO on the Cr sites luckily contributes to two spontaneous elementary steps and thus accelerates the FAOR rates.
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Affiliation(s)
- Runze Ma
- Department of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P.R. China
| | - Jin Zhang
- Beijing Key Laboratory of Bioinspired Materials and Devices & School of Energy and Power Engineering, Beihang University, Beijing, 100191, P.R. China
| | - Jiaxin Gong
- Department of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P.R. China
| | - Yunxiang Lin
- Institutes of Physical Science and Information Technology, School of Materials Science and Engineering, Anhui Key Laboratory of Information Materials and Device, Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Anhui University, Hefei, Anhui, 230601, P.R. China
| | - Jialin Zhang
- Beijing Key Laboratory of Bioinspired Materials and Devices & School of Energy and Power Engineering, Beihang University, Beijing, 100191, P.R. China
| | - Zheng-Qing Huang
- Shaanxi Key Laboratory of Energy Chemical Process Intensification, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, P.R. China
| | - Chun-Ran Chang
- Shaanxi Key Laboratory of Energy Chemical Process Intensification, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, 710049, P.R. China
| | - Shoujie Liu
- Institutes of Physical Science and Information Technology, School of Materials Science and Engineering, Anhui Key Laboratory of Information Materials and Device, Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Anhui University, Hefei, Anhui, 230601, P.R. China
| | - Wei Zhu
- State Key Lab of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, P.R. China
| | - Yuxin Wang
- State Key Lab of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, P.R. China
| | - Ke Zeng
- Department of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P.R. China
| | - Yu Tao
- Department of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P.R. China
| | - Jinhua Hu
- Department of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P.R. China
| | - Zedong Zhang
- Department of Chemistry, Tsinghua University, Beijing, 100029, P.R. China
| | - Xiao Liang
- Department of Chemistry, Tsinghua University, Beijing, 100029, P.R. China
| | - Yunhu Han
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, Xi'an, 710072, P.R. China
| | - Junjie Mao
- Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241002, P.R. China
| | - Zechao Zhuang
- Department of Chemistry, Tsinghua University, Beijing, 100029, P.R. China
| | - Jun Yan
- Department of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P.R. China
| | - Dingsheng Wang
- Department of Chemistry, Tsinghua University, Beijing, 100029, P.R. China
| | - Yu Xiong
- Department of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, P.R. China
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